Anthropic’s internal data showing Claude authoring over 80% of merged production code by May 2026, paired with the June 9 launch of stronger models like Fable 5 and Mythos 5, forms the main driver behind the market’s pricing of elevated commit volumes. Traders see the self-reinforcing loop—where advanced coding agents accelerate further model work—as sustaining momentum through month-end, even as the 7-day average metric remains sensitive to short-term fluctuations. Recent GitHub activity around Claude Code, now exceeding 130k stars with frequent updates, supports continued external contribution trends, while Microsoft’s planned phase-out of some licenses by June 30 introduces a modest counterweight. The spread across bins reflects uncertainty over whether recent capability gains translate into a final-week surge or plateau.